What do "support", "trust" and "lift" in market basket analysis represent?
Market basket analysis can not only allow companies to grasp the sales situation of product combination, but also plan exclusive marketing activities and follow-up sales strategies for product combinations that are often purchased at the same time. It can also provide important references for product display for customers with physical stores. The meanings of the three important indicators in the related product are as follows:
Support is the frequency of these two products appearing at the same time, which represents the universality of the rule. High support means that the frequency of two products being purchased at the same time is also high; for example, there are a total of 100 orders, and in 10 of the orders, A and If B is purchased together, then the support of A and B is 10%;
Confidence refers to the frequency of the subsequent product appearing at the same time when the former item appears in two products, and is used to measure the credibility of the combination. For example, the reliability of the A => B is 60%, which means, after purchasing product A, there is a 60% possibility of purchasing product B at the same time.
Lift is used to measure the effect of the appearance of the previous product on the probability of the subsequent product. For example, the lift of A => B is 3.5, which means that A has a 3.5-fold increase in the sales of B.
The result of the market basket analysis is the rules with a certain degree of support and reliability that have been preliminarily selected. In actual analysis, you can further find the most important association rules through the filters of these three indicators at the top right of the page.